离子能形成分子内氢键.据此判断,相同温度下电离平衡常数Ka2(水杨酸)____ Ka(苯酚)(填“>”或“<”),其原因是____.
若大前提是:任何实数的平方都大于0,小前提是:a∈R,结论是:a2>0,那么这个演绎推理出错在:( )
+50____50
What was Jim's first teacher like?